geometry
posted by johana .
Devin's bathroom measures 6 feet by 10 feet. He wants to cover the floor with square tiles. The sides of the tiles are 6 inches. How many tiles will Devin need?

Ab = 72in * 120in = 8640in^2 = Area of
bathroom.
At = 6in * 6in = 36in^2 Area of each tile.
T = 8640IN^2 / 36IN^2 = 240 Tiles.